theyre not surrendering to these "abominations that they sought to destroy" because they have never sought to destroy the outcasts EVER, infact if anything they have HELPED the outcasts always... your not the sharpest tool in the shed are you?
hell if anything the outcasts have similar goals in mind, i.e. we wanna take over everything with cardamine.
so your logic my friend fails you, everyone has common sense especially aliens with far more technilogical and mental advancements than any human could think of. They are like the last of theyre species, theyre being killed off one by one by corsairs and everything else thats near em (kappa/delta) everyone i mean EVERYONE see's em and just says kill KILL KILL, never even tries to communicate, what are you to do?
then you see theres a race that DOESNT try to kill you infact reveres you, what are you to do as a higher intellegent being? hmm?
you use em thats what you do (oh not to mention outcasts are far from human now, immunities longer life yeah i wouldnt class em as the "abominations" you put them as)